{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Chemical", "Disease"], "input": "Eighteen of 31 ( 58 % ) patients showed cardiac toxicity , defined as having one or more of the following abnormalities : late potentials , complex ventricular arrhythmias , left ventricular dilation , decreased shortening fraction , or decreased ejection fraction ."}
{"Chemical": [], "Disease": ["cardiac toxicity", "ventricular arrhythmias", "ventricular dilation"]}